Tire-deflating machine



Feb. 7, I928; 1,658,314

I I J. WAHL ET AL rms DEED-wring mourns original-Fixed D'c. so. 1924 .2 Sheets-Sheet 1 0 ,IWTORS:

M 2" By Attorneys,

Feb. 7, 1928.

I J. WAHL ET AL TIRE DEFLATING MACHINE 2 Sheets-Sheet '2 OriKinaLFiIed Dec. 30. 1924 film By Attorneys,

INVENTORS: W MW Patented Feb. 7, 1928.

UNITED STATES: PATIENT oF'FicE.

Jenn WAHL, or ROSEDALE. AND-OTTO ivrnnznia, or Hours; N W YORK, AssIenoRs TO a. sonnannns son. mo, QFBROOKLYN, nnwyonx, A coaronn'rron on NEW YORK.

Application filfid December so,'1e24,seria1 The invention relates to attire deflating machine of the general type disclosed n the patents to Henry P, Kraft, Nos. 1,297,186'

coinplishing thisresult consists of a series of pivoted arms and levers which have to'be positioned between the tire and the opposite sides of the foot of the valve stem'to hold the tire wall spaced apart during the ex hausting operation, and saidarmsand levers" must be released after the deflating operation is completed. I According to the present invention, we provide an easily operable means which comprises a suction device, which, when brought into contact withthe tire wall preferably opposite to the foot portion of the tire valve stem, causes a separation of the tire walls, at saidpoint and holds said walls apart until substantially all theair is exhausted from the tire. The, present invention may he in the nature ofan attachment to the machines of i the aforesaid patents. The invention also includes other features of novelty which will be hereinafter pointed out."

In the accompanying drawings, we have shown a. preferred embodiment of our-invention applied to a. machine ofthfe ty e disclosed in the aforesaid patents Whic ihave been provided with an attachment adapting said machines for use with tires. having either straight or bent valves,as disclosed in our co-pending application "Serial No. 73 ,779, filed August 7,1924...

In the accompanying drawings, I Figure 1 is an elevation eta tube support similar to that shown in our do-pnding'application, having thedevice of'the present invention applied thereto, a" tube: being shown as mounted thereon in the position for deflation. v

Fig. 2 is'a top'plan view of Fig.1. Fig. 3 is a detailed view ofone of theele ments ofthe device. w 1 i I Fig; 4 is an enlarged view 'ofFigI 1, the parts being shown mainly in section} Y Referring to the drawings, let A. indicate a support or saddlefor the tube, which is the same.

' 'rmn nnrnnrrnve MACHINE.

No. 758,894. Renewed November'w, 927.

inthe nature of a band of metal curved in and B .is a pipe leading to some form .of-exhaust. or suction apparatus. (not shown).

The pipe B is connected with a member C gular orbent valve I for the pur ose of dedating a tire to wh ch said valve s attache'd.

ll his attachment IIconstitutes. part o fthe novelty of our co pendingapplicationlaform said, andfor a'full andcomplete description thereofireference is to be hadthereto.

,Briefiy, the socket member F is pivotally carried by the supporter saddle .A' and is held against. relative. movement by a lug. f

seating withinian openingin said saddle, Within .thevalve chamber E ofthe socket member F is a packing, gasket J and a spring-pressed valve K normally; seating against said packing notwithstanding the suction action on said valve tending toqun seat it, and providedwith a tirevalveum seating member L1 adapted to ,engagethe valve pin within the valve stem IrtO unseat The free end of the valve stem is pressed against the valve packing J through .the' action of a heavy: spring M normally acting to urge the attachment Htoward the socketF, and during such ao-tionthe valve K is alsounseated by coming into engagement with the valve stem I,.-thus providing through con'nnunication between the tire and the exhaust or 'suction apparatus. Where a tireprovided with a straight stemis to be deflated, the socket F and member H are moved to one side to expose the opening in the socket member 0 for the receptionof the valve stem. Vithin the valve chamber C. ofthe socket 0 there is provided aispringpressed valve (not shown) similar to thatmounted {within the valve chamber E. As thus far described, the. device corresponds substantially to those described in the aforesaid patents and co-pending application According tothe presentinvention, We

term, around which the tube is stretched,

' "provided with a valve chamber C, .to which 3 is coupled a T-fitting D, one branch 0f; Which provide improved means tor holding the walls of the tirefspaced apart sov as to insure aventpassage during the exhausting of the able bracket S, ierein shown as carried by theezthaust pipe It is obvious however. that the lever may be mounted in any other desired orconvenient manner. The valve 0 is'provided with a valve pin 0 which, when the valve is seated extends beyond the plane of the open end of the cup bland is adapted to be unseated by being brought into engagement with any sort of. abutment. Preferably, the lever wei; ited so that iii its downward movement the valve pin 0, upon coming into contact with an abutment, will be unseated and so he d without the further intervention of an operator.

'The suction means G is preferably sup ported atsuch point on the lever Q so that when said'lever is brought down into pro imity to a tire stretched over the saddle A, the valve will be un-seated when the valve pin'o engages the foot portion of the tire through the wall opposite said foot portion ofthe valve stem I, and preferably to one side of thecentral opening in said valve stem through which the air is exhausted from the tire. lVhen the valve 0 thus unseated,-the air is sucked out of the cup N, and'the wall of the tire in engagen'ient with the peripheral edge of the cup is sucked into the cup, as best shown in 4:,and thus provides an unobstructed vent passage at the tootot the tire valve until substantially all of the air is exhausted from the tire. lV hen this last stated condi tion is attained, it is found that the portion of the wall of the tire held by the suction cupN is released therefrom, due. probably, to the atmospheric pressure acting on the exterior of the tire adjacent the periphery of the cup and'the weight of the tire wall within the cup. The releasing of the tire wall in this manner facilitates the removal of the collapsed tire from the support.

To further facilitate the operations, the lever Q, in addition to being pivotally mounted'as described, is also adapted for limited longitudinal movement with respect to its pivotR, by being provided with an elongated slot 9 (shown in Fig. 3). The lever Q is also provided with a transverse pin (1 somewhat in advance of the slot q,

adapted to seat. when the lever is in inactive or raised position, in the saddles or depressions a formed in the top faces of the bracket supports. A pin a which extends transversely of the support somewhat below the saddles 8 serves to limit the downward movement of the lever Q, and thus protects the suction means G- from inquiry should the lever he accidentally displaced trom its inactive position.

In the operation of the machine, which usually provided with twelve or more sockets radially disposed from a central hub, an operator first inserts the valve stem 01 a tire into a socket, then supports the tire over the saddle. The weight of the tire causes the unseating oi the tire valve and the check valve within the socket, where straight valvesteins are used, and the spring M accomplishes this where bent valve stems aroused, the unseatingot the valves thus establishing communication be ween the in: terior of the tire and. the exhaust device. The lever then unseated from its saddles s and brought down into engagement with the tire opposite the valve stem, whereupon, due to the suction act'. cl within the cup N, the wall oi'the tire opposite the foot portion of the valve stem is drawn away from said foot portion, thereby providing an unobstructed exit for the exhausting air. The machine, which rotates in a circle about its hub, presents the tire sup-- ports in succession to the operator at a given point, and a second operator stationed at a distant point, whereat the tire. wui'ch when it reaches him will be in a completely dcfiatcd condition, is removed.

lVhilewe have shown and described a preferred embodin'ient oi our in entioui will be understood tha we do not wish to be limited to; the specific means (h -loved. since modification thereof may as l sorted to without departing from the spirit of the invention.

dl hat we claim is:

1.1; deflating machine for pneumatic tire tubes or the like, comprising a connection to receive a tire valve casing, suction means communicating with said connection, and

additional suction means cooperating with the outer wall of a tire to hold the tire walls separated until substantially allthe air is exhausted from the tire.

2 A deflating machine for pneumatic tire tubes or the like, comprising a connection to receive a tire valve casing, suction means communicating with said connection, and additional suction means cooperating with the outer wall of a tire in proximity to the foot portion of the valve-casing to hold the tire walls separated until all the air is exhausted from the tire.

3. In a deflating machine for tire tubes or the like, means adapted to exhaust the air from a tire tube through its valve casing, and suction means cooperating with the exterior of the tire tube to maintain the walls thereof spaced apart near the foot of the valve casing to provide a vent passage for the air within thetube while exhausting the air therefrom.

4. In a deflating machine for tire tubes or the like, means'for exhausting the air from a tire tube'through its valve casing, and a suction cup adapted to engage the outer Wall of the tire tube at the point opposite the foot portion of the tire valve casing, to hold the tire walls separated until'substantially all the air is exhausted from the tire tube.

5. In a deflating machine for tire tubes or the like, means for exhausting the air from a tire tube through its valve casing, a suction cup adapted to engage the outer wall of the tire tube at the point opposite the foot portion of the tire valve casing, to hold the tire walls separated until substantially all the air is exhausted from the tiretube, and'a check valve in saidsuction cup adapted tobe unseated by the foot portion of the tire valve casing.

6. In a deflating machine for tire tubes or the like, means for exhausting the air from a tire tube through its valve casing,a suction cup adapted to engage the outer wall of the tire tube at the point opposite the foot portion of the tire valve casing, to hold the tire wall-s separated until substantially all the air is exhausted from the tire tube, the circumferential' edge of the suction cup encompassing the opening in the foot portion of the valve casing when said cup 'is in engagement with the tire.

7. In a deflating machine for tire tubes or the like, means for exhausting the air from i a tire tube through its valve casing, a suction cup adapted to engage the outer wall of the tire tube at the point opposite the foot portion of the tire valve casing, to hold the tire walls separated until substantially all the air is exhausted from tire tube, a check valve in said suction cup adapted to be unseated by the foot portion of the tire valve casing, and the circumferential edge with the exterior of a tire tube to provide a vent passage for the air therein while exhausting the air therefrom, and a common exhaust pipe connecting the two suction means with an exhaust device.

9. A deflating machine for pneumatic tires or the like, comprising a connection for receiving a valve casing of aninner tube, a pivoted lever, and suction means carried by the pivoted lever adapted to be brought into cooperative engagement with the top of a tire tube in proximity to the valve casing to hold the wall of the tire spaced from said valve casing while exhausting the air from the tire,

10. A tire deflating machine, comprising a pivoted lever, a valve controlled suction means carried by said lever, the valve having a spring normally holding the valve seated, and a valve pin adapted to open the valve when brought into engagement with an abutment. a

11. A tire deflating machine, comprising a pivoted lever adapted to be moved in a substantially vertical plane, a valve controlled suction means carried by said lever, the valve having a spring normally holding the valve seated, and a valve pin adapted to open the valve when brought into engagement with an abutment, the weight of the lever acting to maintain said valve in open position while the valve pin remains in engagement with the abutment.

In witness whereof, we have hereunto signed our names.

JOHN. WAHL. OTTO MELZER. 

